52results about How to "Simple dyeing method" patented technology

The invention relates to a method for dyeing acrylic fiber fabrics by utilizing bacterium dyestuff prodigiosin, which includes the steps of (1) dissolving the prodigiosin by using ethyl acetate or N, N-dimethylformamide and then adding dissolved prodigiosin into water to produce a dyeing solution, and (2) dyeing the acrylic fiber fabrics by utilizing the dyeing solution, wherein the dosage of theprodigiosin is 0.1-6% of that of acrylic fiber fabrics by mass, dyeing bath ratio is 1:5-20, potential of hydrogen (pH) of an adjusting dye solution is 4.0-6.0, dyeing temperature is 80-90 DEG C, anddyeing time is 30-90 minutes. Compared with a dyeding method of a mixed solution of carbinol or ethanol and the water, dye-uptake rate of the dyestuff is high, level-dyeing property is good, and the dyeing method is simple, easy to operate and low in device requirements. The dyed acrylic fiber fabrics produced by means the method have good washing fastness and abrasion-resisting fastness, bright color, good antibiotic property and wide application prospects, and antibacterial rate is more than 90%.

The invention discloses a polyphenylene sulfide multi-component blended flame-retardant fabric which is blended with polyphenylene sulfide fibers and aramid fibers. It further includes melamine fibers. The dyeing process of the fabric is also disclosed. Firstly, the fabric is desized and scoured by using the one-bath process of rolling and steaming; then the fabric is immersed in a dye solution for dyeing. and adjust the acidity and alkalinity through a pH regulator; when the fabric is made of polyphenylene sulfide fiber and aramid fiber, the dye is composed of disperse dyes and cationic dyes; when the fabric is made of polyphenylene sulfide fiber, melamine fiber and When aramid fibers are blended, the dyes are composed of disperse dyes, acid dyes and cationic dyes. The fabric of the present invention has good flame retardancy, high temperature resistance, high-strength tear resistance, beautiful fabric style, good color fastness, high dye uptake rate, and good color fastness, which can meet the requirements of the fabric in the field of safety and protective clothing. application.

The present invention discloses process of dyeing silk with dye yam extract, and belongs to the field of fabric dyeing and finishing technology. The process includes dip dyeing silk in dye yam extract liquor, and post-dyeing treatment with mordant of ferrous sulfate, titanium sulfate, copper sulfate, aluminum sulfate, zinc chloride or ferric chloride to obtain different colors. The present invention has the advantages of high color fastness, homogeneous dyeing and environment friendship, and the dyed silk is soft, antiseptic and ultraviolet ray shading.

The invention belongs to the technical field of dyeing and finishing, and relates to a dyeing method for disperse dyes without additives, comprising: (1) taking a high-temperature-resistant container, putting disperse dyes and water into the container, and sealing the dye and water with a microporous membrane In the container; (2) Put the sealed container into the dyeing cup for high temperature and high pressure dyeing, and put the fibers (polyester, acrylic, nylon, spandex, polypropylene, etc.) The fiber is dyed, and then washed with water; (3) after the dye solution in the container is cooled to room temperature, the disperse dye is recovered by suction filtration. The method is simple in process, convenient in operation, does not need to add auxiliary agents during dyeing, avoids the auxiliary agents themselves and their pollution to water during dyeing, reduces the difficulty of sewage treatment, is energy-saving and environmentally friendly, and the dye in the residual liquid can be recycled.

The invention discloses a nanometer lanthanum oxide-used polyester dyeing method which comprises the following steps: firstly performing surface modification on nanometer lanthanum oxide particles, performing alkali treatment on polyester, performing coupling reaction on the surface-modified nanometer lanthanum oxide and the polyester subjected to the alkali treatment through a silane coupling agent, and finally, dyeing the coupled polyester through a carrier method. After lanthanum oxide is subjected to stearic acid esterification surface modification, the affinity between a carrier and a dispersion dye as well as between the carrier and polyester fiber can be iimproved, so that the glass-transition temperature of the polyester can be reduced; therefore, after the stearic acid surface-modified lanthanum oxide is coupled to the surface of the polyester, the dispersion rate of the carrier and the dispersion rate is increased, so that the carrier and the dispersion dye can enter the polyester fiber in the form of a single molecule, and the dyeing rate and the dye uptake rate of a scattered dye are increased; furthermore, the reaction temperature is relatively low, and dyeing of blended polyester is facilitated.

The invention discloses a video dyeing method based on a Gabor feature space. The video dyeing method based on the Gabor feature space comprises creating a rotation invariant Gabor filter and a Gabor feature space by using the texture feature of a video and generating Gabor current of the video and choosing keys. The keys are firstly to be dyed and then the color of the keys is spread between video frames according to a computed result of the Gabor current. Users can modify the color of a part where a high error of dyeing effect exists through an interactive operation. The video dyeing method based on the Gabor feature space is simple, easy to use, applicable to all kinds of video data with regional textures, capable of being completed on a graphics hardware graphics processing unit (GPU) platform, and fast in operation speed.